Employee Benefit Plans (Components of Net Periodic Benefit Cost for Pension Benefits) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
U.S. Plans
Pension expense:
Service cost	$ 0.2	$ 0.3	$ 0.4	$ 0.6
Interest cost	1.1	1.8	2.2	3.6
Expected return on plan assets	(2.0)	(2.4)	(4.0)	(4.8)
Amortization of prior service cost	0.0	0.0	0.0	0.0
Amortization of net loss	0.6	1.7	1.2	3.4
Net pension expense	(0.1)	1.4	(0.2)	2.8
Non-U.S. Plans
Pension expense:
Service cost	0.9	1.0	1.8	2.0
Interest cost	0.7	0.8	1.4	1.6
Expected return on plan assets	(0.7)	(0.6)	(1.4)	(1.2)
Amortization of prior service cost	0.0	0.2	0.2	0.4
Amortization of net loss	0.4	0.3	0.8	0.6
Net pension expense	$ 1.3	$ 1.7	$ 2.8	$ 3.4